'The Croods' and 'Little Mermaid' top DVD and Blu-ray sales chart

A new Stone Age children's comedy and a Disney classic have debuted at the top of the DVD and Blu-ray sales chart.

"The Croods," the DreamWorks computer-animated movie about a prehistoric family, was the top-selling title in its first week in release after bringing in big numbers at the box office earlier this year. The movie, distributed by 20th Century Fox, drew more than $187 million in ticket sales domestically and $585 million worldwide.

In second place was the new Diamond Edition of Disney's 1989 hit "The Little Mermaid." The edition includes the film's first Blu-ray disc, a DVD version and a digital download. It has a list price of $45 and is retailing at Wal-Mart and Amazon.com for $27.

Only a handful of movies qualify for the exclusive club of films that have taken in more than $1 billion in worldwide box office -- and only two have made more than $2 billion. By Charles Fleming | Sources: Los Angeles Times, Box Office Mojo

A swarm of TV zombies has overwhelmed newly released movies. In its first week in release, the third season of the AMC series "The Walking Dead" was the top-selling DVD and Blu-ray title, beating film titles "The Great Gatsby" and "Pain & Gain."